Additive for hydraulic compositions, and hydraulic composition using same
US-2024199490-A1 · Jun 20, 2024 · US
Dry building material formulations containing polymer powders
US9284221B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9284221-B2 |
| Application number | US-201214348638-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 2, 2012 |
| Priority date | Oct 5, 2011 |
| Publication date | Mar 15, 2016 |
| Grant date | Mar 15, 2016 |
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- Title
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Abstract
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Hydraulically setting compositions containing mineral binders exhibit improved adhesion when polymer powders produced by drying a silica sol and a redispersible polymer powder emulsion are added.
First claim
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The invention claimed is: 1. A method for producing dry building material formulations, comprising mixing one or more hydraulically setting binders, one or more fillers, one or more polymers in the form of water-redispersible polymer powders, and optionally one or more additives, wherein the polymer powders are prepared by drying aqueous dispersions comprising one or more silica sols and one or more polymers of ethylenically unsaturated monomers. 2. The method of claim 1 , wherein the one or more silica sols are added to a previously prepared polymer dispersion, prior to drying. 3. The method of claim 1 , wherein the one or more silica sols are solutions or colloidal dispersions of silicon dioxide particles in an aqueous medium. 4. The method of claim 1 , wherein the one or more silica sols are selected from the group consisting of colloidal silica, waterglass, siliceous sols, and mixtures thereof. 5. The method of claim 1 , wherein at least one of one or more silica sols contains 2 to 50 weight percent of silicon dioxide particles in dissolved and/or dispersed form, the weight percent based on the total weight of the silica sol. 6. The method of claim 1 , wherein the amount of the one or more silica sols is sufficient to provide, based on the weight of the polymer powder, from 1 to 30 weight percent of silica.
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Classifications
Treatment for improving the free-flowing characteristics · CPC title
Homopolymers or copolymers of esters of monocarboxylic acids · CPC title
added as redispersable powders · CPC title
Microsilica, e.g. colloïdal silica (preparing microsilica slurries or suspensions C04B18/148) · CPC title
Ingredients agglomerated by treatment with a binding agent · CPC title
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- What does patent US9284221B2 cover?
- Hydraulically setting compositions containing mineral binders exhibit improved adhesion when polymer powders produced by drying a silica sol and a redispersible polymer powder emulsion are added.
- Who is the assignee on this patent?
- Wacker Chemie Ag
- What technology area does this patent fall under?
- Primary CPC classification C04B28/02. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Mar 15 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).